A reminder that Robb was willing to exchange a hundred men to excuse Jon from his service at the Wall to make him his successor.
A reminder that Bran suggested having a bastard rule Lady Hornwood's lands because he thought of Jon.
A reminder that both Robb and Bran wanted to go on an adventure to the Wall and show up just to greet him.
A reminder that Arya thinks of him constantly, and that Needle is the tether that keeps her from becoming No One.